Method of allocating physical memory in specified address range under linux system platform

Abstract

A method of allocating a physical memory in a specified address range under a Linux system platform is applied in a testing process of a physical memory under a Linux operating system. In this method, according to a specified address range and a size of a memory to be allocated, a large amount of physical memories in the system are allocated in a specified address range, and then the information about the allocated memories is transmitted, so as to map, inspect, and release the memories, thereby effectively supporting the test for physical memories under the Linux operating system.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of Invention[0002]The present invention relates to a method of allocating a memory, and more particularly to a method of allocating a physical memory in a specified address range under a Linux system platform.[0003]2. Related Art[0004]Currently, a memory test plays a very important role in a hardware diagnosis solution, which mainly includes two parts: memory allocation and test algorithm. The test algorithm specifies the rules for reading and writing memories, and different test algorithms are directed to inspecting different types of memory errors. Relevant information about conventional test algorithms has been specially introduced in documents about memory test algorithms, which will not be repeated herein. The memory allocation is an important precondition for a memory read / write test, which directly influences whether the test effect may be achieved or not, for example, whether the true physical memory can be tested or whether the same...

AI Technical Summary

Benefits of technology

[0009]In order to solve the problems and eliminate the defects in the conventional art, the present invention is directed to a method of allocating a physical memory in a specified address range under a Linux system platform, which is applied in a test process of a physical memory in a Linux operating system. According to a specified address range and a size of the memory to be allocated, the method is used to allocate a large amount of physical memories in the system in a specified address range, thereby providing efficient support for the test of the physical memory in a Linux operating system.

[0012]In view of the above, the present invention has the following advantages.

[0013]The method of allocating a physical memory in a specified address range under a Linux system platform provided by the present invention can be used for allocating a large amount of physical memories in a specified address range, which provides a functional interface for allocating a plurality of pages / blocks at one time through improving the overall allocation flow, and improves searching mode and enhances searching speed through using the data structure in the kernel. Meanwhile, through splitting memories, the method of the present invention avoids occupying redundant memories. Therefore, the method of the present invention not only combines the advantages of the above two methods of allocating a physical memory in the conventional art, but also overcomes the defects of such conventional methods, thereby providing efficient support for the test of physical memories in a Linux operating system. The main advantages thereof lie in that, these are the physical memories that are allocated; the allocation is performed in the specified address range; a large amount of memories can be allocated at one time; and no other adjacent memory pages are occupied, thereby avoiding the problem of wasting resources in the conventional art; and it is capable of testing specific memory units or memories in a specified slot.

Problems solved by technology

However, different operating systems manage physical memories in different manners, without uniform rules.

Therefore, the memory allocation is relatively complicated, and should be performed in consideration of different operating systems.

However, this method can only allocate one memory page each time, has low efficiency, and may possibly occupy other adjacent memory pages, thereby resulting in wasting of resources.

Therefore, this method has a great limitation and is not suitable for testing a large amount of physical memories.

However, the main disadvantage of this method lies in that, it cannot allocate the physical memories in a specified address range (due to being restricted by a data structure for organizing the physical memories in the Linux system kernel).

Therefore, this method cannot be used to test specific memory units or memories in specified slots.

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